@mamdouh-aboammar/dev-sentinel/CHANGELOG.md

🛡️ Enterprise-grade observability SDK for React applications. Real-time diagnostics with 14+ specialized packs: Network Intelligence, Security Guards, Privacy Protection, Code Quality Analysis, Device Monitoring, and more.

# Changelog

All notable changes to Dev-Sentinel will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [1.0.0] - 2025-12-03

### 🎉 Initial Public Release

The first stable release of Dev-Sentinel - Enterprise-grade observability SDK for React applications.

### ✨ Added

#### Core Features
- **Unified Logging API**: `devSentinel.log()` with support for 14+ event types
- **Multi-Store Architecture**: Separate stores for different diagnostic categories
- **IndexedDB Persistence**: Automatic storage and hydration of logs
- **Reactive Subscriptions**: Real-time event streaming with `subscribe()` methods
- **Privacy-First Redaction**: Built-in PII and sensitive data protection
- **Development-Only Execution**: Zero production footprint with `import.meta.env.DEV` guards

#### 🌐 Network Intelligence Pack
- Endpoint health tracking and status monitoring
- API contract validation with schema enforcement
- Network waterfall visualization
- Critical path tracking for essential requests
- Retry pattern analysis and silent failure detection
- Request/response anomaly detection
- `devFetch` wrapper with automatic diagnostics

#### 🧪 Testing Pack
- Runtime test intelligence and flakiness detection
- Race condition identification
- Non-deterministic behavior tracking
- Coverage gap hints
- Mockability analysis for components
- Unreachable state detection

#### 🎨 Design Pack
- Layout shift detection (CLS-like monitoring)
- Responsive breakpoint analysis (xs/sm/md/lg/xl)
- WCAG 2.1 color contrast validation
- UI performance monitoring (long tasks, forced reflows)
- Visual regression detection with snapshot comparison
- Layout thrashing detection

#### 🔐 Secure-UI Anti-Fraud Pack
- Suspicious input sequence detection
- Autofill and hidden field abuse monitoring
- Brute-force attack indicators
- Fake overlay/clickjacking detection
- Click injection pattern recognition
- Session fraud scoring

#### 🔒 Privacy Guard Pack
- Console PII leak detection
- Storage PII issue monitoring
- Analytics data leak prevention
- Over-posting detection (excessive data in API calls)
- Object logging abuse tracking
- Session-based privacy scoring

#### 📱 Device & Environment Pack
- CPU throttling detection
- Memory pressure monitoring
- Battery saver mode detection
- GPU performance tracking
- Network mode detection (low bandwidth)
- OS-level animation reduction detection
- WebView environment identification

#### 🧠 Code Smell Pack
- AI-assisted code quality analysis
- Duplicate logic detection
- Deeply nested component identification
- Magic number flagging
- Props explosion warnings
- Abstraction candidate suggestions
- Component anti-pattern detection
- State misuse identification
- Global state abuse tracking

#### 🔄 Regression Pack
- Novel issue detection (never seen before)
- Issue fingerprinting for tracking
- Regression timeline snapshots
- Frequency spike detection
- Issue reintroduction alerts
- Historical comparison

#### 🎨 UI Components
- **DevPanel**: Beautiful floating panel with tabbed interface
- Real-time event streaming with filtering
- JSON export functionality
- Syntax-highlighted payload inspection
- Dark mode support
- Per-pack dedicated tabs:
  - Network Intelligence
  - Endpoint Health
  - Contract Errors
  - Waterfall Analysis
  - Critical Path
  - Testing Insights
  - Flakiness Report
  - Coverage Hints
  - Layout Stability
  - Responsive Diagnostics
  - Accessibility (Color & Readability)
  - UI Performance
  - Visual Regression
  - Secure-UI
  - Auth Abuse
  - Click Injection
  - Privacy Guard
  - Data Minimization
  - Analytics Leak
  - Device Diagnostics
  - Environment Health
  - Code Smell
  - Refactoring Suggestions
  - Regression
  - Novel Issues
  - Regression Timeline

#### 📚 Type System
- Full TypeScript support with comprehensive type definitions
- Exported types for all event categories:
  - `NetworkEventType`
  - `TestingEventType`
  - `DesignEventType`
  - `SecureUiEventType`
  - `PrivacyEventType`
  - `DeviceEventType`
  - `EnvironmentEventType`
  - `CodeSmellEventType`
  - `RegressionEventType`
- Type-safe payload structures
- Generic `StoredLog` interface

#### 🛠️ Developer Experience
- React integration with `DevSentinelProvider`
- `DevSentinelErrorBoundary` for error tracking
- `useDevSentinel` hook for component-level access
- Orchestrator API for lifecycle management
- Feature configuration system
- Modular pack initialization

### 🏗️ Architecture

- **Modular Store System**: Each diagnostic category has its own store
- **Event Normalization**: Automatic aliasing of legacy event types
- **Hydration System**: Smart loading from IndexedDB on init
- **Subscription Model**: Pub/sub pattern for real-time updates
- **Async-First Design**: All logging operations are non-blocking
- **Error Resilience**: Never crashes host app, graceful degradation

### 📖 Documentation

- Comprehensive README with quick start guides
- Per-pack detailed documentation:
  - Network Pack Guide
  - Testing Pack Guide
  - Secure-UI Pack Guide
  - Privacy Guard Guide
  - Code Smell Pack Guide
  - Device & Environment Guide
  - Regression Pack Guide
- Integration guide for various frameworks
- TypeScript usage examples
- API reference for all public methods

### 🔧 Configuration

- Configurable redaction rules
- Customizable pack settings
- Feature toggles for selective enablement
- Threshold adjustments for detection sensitivity
- Custom AI adapters for code smell analysis
- Selector configuration for visual regression

### 🎯 Performance

- Zero runtime overhead in production
- Lazy loading of heavy components
- Throttled observers to prevent performance impact
- Efficient IndexedDB operations
- Memory-conscious event storage
- Batched DOM operations via `requestIdleCallback`

### 🔒 Security & Privacy

- No external network calls
- Local-only data storage
- Automatic PII redaction
- Configurable sensitive key patterns
- Token and credential masking
- Privacy-first by default

### 📦 Package

- ES Module and CommonJS builds
- TypeScript declaration files
- Source maps for debugging
- Optimized bundle size
- Tree-shakeable exports
- React 18+ and 19+ peer dependency support
- Zod peer dependency for schema validation

---

## [Unreleased]

### Planned Features

#### 🔑 Auth & Session Pack (Coming Soon)
- Invalid token flow detection
- Silent logout issue tracking
- Token refresh race condition detection
- UI/data mismatch monitoring
- Redirect loop detection
- Multi-tab session desync

#### 🤖 AI Agent Pack (Coming Soon)
- Repeated LLM call detection
- Prompt hallucination pattern tracking
- Large context overhead monitoring
- Assistant reply validation
- Inconsistent agent state detection
- Duplicate task identification

#### 📈 SaaS Metrics Pack (Coming Soon)
- Funnel blockage detection
- User interaction friction tracking
- Confusing onboarding step identification
- Abandoned flow detection
- Time-to-value anomaly tracking

#### ♿ A11y Interaction Pack (Coming Soon)
- Rage clicking detection
- Dead tap identification
- Lost focus position tracking
- Small tap target warnings

#### 🚩 Feature Flag Pack (Coming Soon)
- Flag misconfiguration detection
- Conflicting flag identification
- Inconsistent behavior across tabs
- Mid-session flag change tracking
- Unguarded experimental feature warnings

#### 🧩 Business Logic Drift Pack (Future)
- Conditional logic drift detection
- Rule override tracking
- Priority conflict identification
- Rule execution order validation

#### 💾 Client Persistence Health Pack (Future)
- IndexedDB issue monitoring
- LocalStorage problem detection
- Cache health tracking
- Stale data identification
- Schema mismatch detection
- Rehydration issue tracking

#### 🏢 Micro-Frontend Pack (Future)
- Cross-module conflict detection
- Duplicate dependency tracking
- Shared state conflict monitoring
- Module boundary validation
- Component override tracking

---

## Version History

### Version Naming Convention

Dev-Sentinel follows [Semantic Versioning](https://semver.org/):
- **MAJOR**: Breaking API changes
- **MINOR**: New features, backwards compatible
- **PATCH**: Bug fixes, backwards compatible

---

## Migration Guides

### From 0.x to 1.0

1. **Package name change**: Update imports from `dev-sentinel` to `@prepilot/dev-sentinel`
2. **Event type normalization**: Legacy design event types are automatically aliased
3. **Store separation**: Network, CodeSmell, SecureUi, Privacy, Device, and Environment events now have dedicated stores
4. **Hydration**: Call pack-specific hydration methods: `hydrateNetworkFromDb()`, `hydrateCodeSmellFromDb()`, etc.
5. **Subscriptions**: Use pack-specific subscription methods: `subscribeNetwork()`, `subscribeCodeSmell()`, etc.

---

## Support

- 🐛 [Report Issues](https://github.com/prepilot/dev-sentinel/issues)
- 💬 [Discussions](https://github.com/prepilot/dev-sentinel/discussions)
- 📖 [Documentation](https://github.com/prepilot/dev-sentinel)

---

**Note**: This is the first stable public release. Previous versions (0.x) were internal development iterations.